"Lump" is a song by alternative rock band the Presidents of the United States of America. It was released in 1995 and featured on their self-titled debut album. The song reached number one on Billboard's Modern Rock Tracks chart in 1995. Composer Chris Ballew said that the lyrics combined his own history of having a benign tumor in the head with a vision he had of a woman in a swamp, while employing the word "lump" because Ballew was fond of it.[3] The musical part was described by Ballew as him "trying to write a Buzzcocks song". Ballew considers it his favorite composition.[4]
Later in the same year, it debuted on the Album Rock Tracks chart, and went on to hit number seven. The song is featured in the video games Rock Band 2, the Nintendo DS version of Band Hero, Just Dance and Saints Row IV. It has additionally been covered or remade by several artists such as The Johnstones and "Weird Al" Yankovic.